I'm not 100% sure that this is right but I think D. is correct.
Answer:
Dilute 1 ml of 2M solution to 100 ml
Explanation:
C₁V₁=C₂V₂
V₁=C₂V₂/C₁=
=100×0.02/2=1ml
Answer:
Rate of hydrogen formation is 0.05 mole per second
Explanation:
Firstly, we write the equation of reaction.
When alkali earth metals react with dilute mineral acid, the reaction is vigorous with the production or evolution of hydrogen gas as a result of the displacement of the hydrogen from the acid by the metal. This is one of the basic reactions of mineral acids
Ca + H2SO4 ——> CaSO4 + H2
Looking at the reaction, 1 mole of calcium gave 1 mole of the hydrogen gas
What we do now is to calculate the number of moles of calcium produced by 20g of Ca
Mathematically;
number of moles = mass/atomic mass
number of moles of calcium is thus
20/40 = 0.5 moles
Now, if 1 mole of calcium produced 1 mole of the gas
Definitely, 0.5 mole of calcium will produce 0.5 mole of the gas
So the rate of gas formation would be 0.5/10 = 0.05 mole/second
You can't draw on here but if you are looking for the molecular shape of CO2 it is linear. The central atom (C) is bonded to two atoms and has no lone pairs. It has a bond angle of 180 degrees and a hybridization of sp.
